GP5000 users: does it really make that big of a difference?
I'm not opposed to paying for quality, but I wonder if the difference between say, the UltraSport IIs that I'm riding on currently compared to GP5000s is big enough? Is it something I'll really notice? I've put thousands of miles on USIIs and they've performed reliably. GP5000 users: what makes them worth the extra $15 or so per tire